Researchers recently disclosed a path-traversal vulnerability (CVE-2025-11001) in the open-source archiver 7-Zip that allows attackers to craft malicious archives which, when opened with a vulnerable 7-Zip client, can trigger the flaw and culminate in remote code execution.
The defect was already remedied in 7-Zip v25.00, released some three months ago; disclosure was postponed because 7-Zip lacks an automatic update mechanism, and premature publicization could have exposed many unpatched systems to grave risk.
With the passage of time, however, the vulnerability write-up has now been published, and proof-of-concept exploit code has appeared on GitHub, enabling adversaries to weaponize the flaw directly. Consequently, users of 7-Zip should immediately upgrade to the latest release: once a PoC is public, exploitation attempts typically surge exponentially—an effect amplified for software that does not auto-update.
Security researchers and practitioners may legitimately employ the PoC to test defenses and deepen their understanding of such exploitation techniques, thereby improving future audit and remediation efforts.
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